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Hafnium carbides have recently demonstrated high interest to strengthen equi-axed polycrystalline superalloys. Notably chromia-forming Nibased alloys reinforced by HfC appeared as being both oxidation-resistant and creep...
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Two Hf–poorest versions of a high performance chromia–forming nickel–based polycrystalline cast alloy reinforced by HfC carbides were investigated by replacing more or less hafnium by tantalum to reduce production cost. ...
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Two alloys based on nickel and designed to be reinforced by MC carbides thanks to the presence of Hf and Ta were produced by casting. They were subjected to 50 h-long isothermal exposure at 1250 C in synthetic air with t...